It was falsely reported for years that he had lost a March 11, 1968 fight down in Argentina to Gregorio Peralta, but Marsh insisted that someone fought Peralta under his name, as he had never left the U.S. [1] Minnesota Boxing Commission records (where Marsh and manager, Verne Gagne, were licensed) also corroborate this story, not showing any such fight on file for Marsh from 1968.

Marsh died aged 70, in Overland Park, Kansas, where he had been a schoolteacher for 30 years. [2]